DAC8 as Reference to a PGA
Anonymous
Not applicable
Jun 12, 2011
12:33 PM
- Subscribe to RSS Feed
- Mark as New
- Mark as Read
- Bookmark
- Subscribe
- Printer Friendly Page
- Report Inappropriate Content
Jun 12, 2011
12:33 PM
Question: I am using the output of a DAC8 as reference to a PGA, but it does not work. What could be the reason?
Answer:
The DAC is formed by a Switched Capacitor block whose output is switching in nature (Refer AN2041 for details of the theory of operation of a switched capacitor block). In order to have a continuous output from a switched capacitor block, the output has to be passed through a Sample and Hold circuit which is present in the Analog Out Bus. So, to connect the output of a DAC to a PGA, it has to be first connected to the Analog Bus and then to the PGA.
Labels
- Tags:
- psoca 1
Rate this article:
Contributors
-
This widget could not be displayed.Anonymous